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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2016-7-4-595-598</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-1241</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Structural and magnetic properties of BaCo2−xNixFe16O27  hexagonal ferrite prepared by a simple heat treatment method</article-title><trans-title-group xml:lang="ru"><trans-title>Structural and magnetic properties of BaCo2−xNixFe16O27  hexagonal ferrite prepared by a simple heat treatment method</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Chauhan</surname><given-names>Chetna C.</given-names></name><name name-style="western" xml:lang="en"><surname>Chauhan</surname><given-names>Chetna C.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Institute of Technology</p><p>Ahmedabad – 382 481, Gujarat</p></bio><bio xml:lang="en"><p>Institute of Technology</p><p>Ahmedabad – 382 481, Gujarat</p></bio><email xlink:type="simple">chetna.chauhan@nirmauni.ac.in</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Jotania</surname><given-names>Rajshree B.</given-names></name><name name-style="western" xml:lang="en"><surname>Jotania</surname><given-names>Rajshree B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Department of Physics, University School of Sciences</p><p>Ahmedabad – 380 009, Gujarat</p></bio><bio xml:lang="en"><p>Department of Physics, University School of Sciences</p><p>Ahmedabad – 380 009, Gujarat</p></bio><email xlink:type="simple">rbjotania@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Nirma University</institution></aff><aff xml:lang="en"><institution>Nirma University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Gujarat University</institution></aff><aff xml:lang="en"><institution>Gujarat University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>22</day><month>08</month><year>2025</year></pub-date><volume>7</volume><issue>4</issue><fpage>595</fpage><lpage>598</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Chauhan C.C., Jotania R.B., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Chauhan C.C., Jotania R.B.</copyright-holder><copyright-holder xml:lang="en">Chauhan C.C., Jotania R.B.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nanojournal.ifmo.ru/jour/article/view/1241">https://nanojournal.ifmo.ru/jour/article/view/1241</self-uri><abstract><p>A series of nickel-doped barium cobalt hexagonal ferrite samples with chemical composition BaCo2−xNixFe16O27 (x = 0.4, 0.8, 1.2, 1.6 and 2.0) were prepared using a simple heat treatment method. The dried precursor was calcined at 650 °C for 3 hours in a muffle furnace and slowly cooled to room temperature in order to obtain nickel-doped barium cobalt hexagonal ferrite powder. The prepared hexagonal ferrite powder samples were characterized using X-ray diffraction (XRD) and Vibrating Sample Magnetometer (VSM) techniques in order to study the effect of nickel substitution on structural and magnetic properties of barium cobalt hexagonal ferrites. The XRD analysis confirms the formation of mixed phases of W, M and spinel (S). The prepared powders exhibited single and multi-domain structures.</p></abstract><trans-abstract xml:lang="ru"><p>A series of nickel-doped barium cobalt hexagonal ferrite samples with chemical composition BaCo2−xNixFe16O27 (x = 0.4, 0.8, 1.2, 1.6 and 2.0) were prepared using a simple heat treatment method. The dried precursor was calcined at 650 °C for 3 hours in a muffle furnace and slowly cooled to room temperature in order to obtain nickel-doped barium cobalt hexagonal ferrite powder. The prepared hexagonal ferrite powder samples were characterized using X-ray diffraction (XRD) and Vibrating Sample Magnetometer (VSM) techniques in order to study the effect of nickel substitution on structural and magnetic properties of barium cobalt hexagonal ferrites. The XRD analysis confirms the formation of mixed phases of W, M and spinel (S). The prepared powders exhibited single and multi-domain structures.</p></trans-abstract><kwd-group xml:lang="en"><kwd>nickel doped barium cobalt hexagonal ferrites</kwd><kwd>heat treatment method</kwd><kwd>structural and magnetic measurements</kwd></kwd-group><funding-group><funding-statement xml:lang="en">One of the authors (Chetna C. Chauhan) acknowledge the funding support from Gujarat Council of Science and Technology (GUJCOST/MRP/2014-15/432, dated 30/06/2014) Gandhinagar. The work is also supported by DRS-SAP-Phase-I program of UGC (F.530/10/DRS/2010 (SAP-I)), New Delhi, India.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Pullar R.C. Hexagonal Ferrites: A review of the synthesis, properties and applications of hexaferrite ceramics. Prog. Mater Sci., 2012, 57, P. 1191–1334.</mixed-citation><mixed-citation xml:lang="en">Pullar R.C. Hexagonal Ferrites: A review of the synthesis, properties and applications of hexaferrite ceramics. Prog. Mater Sci., 2012, 57, P. 1191–1334.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Vincent H., Sugg B., et al. 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